1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alexandr1967 [171]
3 years ago
7

I don’t understand what they saying I’m struggling on this problem

Mathematics
1 answer:
lilavasa [31]3 years ago
6 0

Answer:

(A)

Step-by-step explanation:

1/2=x/6

2x=6

x=3

THerefore, (A)

You might be interested in
Diego and Jada are both trying to write an expression with fewer terms that is equivalent to
UkoKoshka [18]

Answer: Diego, 4a + 9b is equivalent

Step-by-step explanation:

7a + 5b - 3a + 4b

= (7a - 3a) + (5b + 4b)           We rerange the variables, and put them together with (), which make it more clear to solve.

= 4a + 9b

7 0
3 years ago
Solve the equation by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are locat
eimsori [14]

Answer:

There are NO real roots for this equation. The only roots have imaginary parts and therefore cannot be represented on the real x-axis.

Step-by-step explanation:

We notice that the expression on the left of the equation is a quadratic with leading term 2x^2, which means that its graph is that of a parabola with branches going up.

Therefore, there can be three different situations:

1) if its vertex is ON the x axis, there would be one unique real solution (root) to the equation.

2) if its vertex is below the x-axis, the parabola's branches are forced to cross it at two locations, giving then two real solutions (roots) to the equation.

3) if its vertex is above the x-axis, it will have NO real solutions (roots) but only non-real ones.

So we proceed to examine the vertex's location, which is also a great way to decide on which set of points to use in order to plot its graph efficiently.

We recall that the x-position of the vertex for a quadratic function of the form  f(x)=ax^2+bx+c is given by the expression:

x_v=\frac{-b}{2a}

Since in our case a=2 and b=-3, we get that the x-position of the vertex is:

x_v=\frac{-b}{2a}\\x_v=\frac{-(-3)}{2(2)}\\x_v=\frac{3}{4}

Now we can find the y-value of the vertex by evaluating this quadratic expression for x = 3/4:

y_v=f(\frac{3}{4})=2( \frac{3}{4})^2-3(\frac{3}{4})+4\\f(\frac{3}{4})=2( \frac{9}{16})-\frac{9}{4}+4\\f(\frac{3}{4})=\frac{9}{8}-\frac{9}{4}+4\\f(\frac{3}{4})=\frac{9}{8}-\frac{18}{8}+\frac{32}{8}\\f(\frac{3}{4})=\frac{23}{8}

This is a positive value for y, therefore we are in the situation where there is NO x-axis crossing of the parabola's graph, and therefore no real roots.

We can though estimate a few more points of the parabola's graph in order to complete the graph as requested in the problem. For such we select a couple of x-values to the right of the vertex, and a couple to the right so we can draw the branches. For example: x = 1, and x = 2 to the right; and x = 0 and x = -1 to the left of the vertex:

f(-1) = 2(-1)^2-3(-1)+4= 2+3+4=9\\f(0)=2(0)^2-3(0)+4=0+0+4=4\\f(1)=2(1)^2-3(-1)+4=2-3+4=3\\f(2)=2(2)^2-3(2)+4=8-6+4=6

See the graph produced in the attached image.

4 0
3 years ago
Find |23| absolute value
Ilia_Sergeevich [38]

Answer:

23

Step-by-step explanation:

The absolute value of any number is just the positive version of that number. For example the absolute value of -12 is 12.

Hope this helps! :)

7 0
3 years ago
A proposed new ride at Disneyland is a Ferris wheel that goes partially undergrand. A preliminary design idea is for the passeng
Drupady [299]

Height above ground (in feet) = 10 [ 1 - 3 cos (9t degrees) ]

't' is the time, in seconds, after you sit down and the wheel starts turning.


7 0
3 years ago
Can someone please help?
castortr0y [4]
B- They are always congruent. Congruent means in agreement or harmony. But in this case, identical in form. Parallelograms are parallel on both sides, which makes them have congruent sides. 
P.S.- This is elementary level, no offense. 
5 0
3 years ago
Other questions:
  • What do same side exterior angles add up to
    11·1 answer
  • System A
    12·1 answer
  • Find the highest common factor (HCF) of 12 and 20.
    12·1 answer
  • What is the ratio of the amount invested in company A to the amount invested in company B? Write the answer as a fraction using
    8·2 answers
  • What two numbers add to make 36 with one of the numbers being exactly twice the other?
    8·1 answer
  • 2. Graph x < 8 and x > -1.
    11·1 answer
  • 73 divided by the difference between 12 and 7
    12·2 answers
  • 1/4 divided by 5/9 =?<br> In simplest form
    8·2 answers
  • a skydiver jumps out from the plane at 10,000 feet above the ground. the skydiver decends at a rate of 175 feet per seconds. how
    12·2 answers
  • 20 POINTS! Will give brainliest to correct answer! Please help. I would also really appreciate an explanation for the answer so
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!